Improvement in rotary engines



Patentgd May 25,1875.

0. B U R N E T TI Rotary Engine.

THE GRAPHIC comm-u -um.a9 M4 PARK PLAGE,N.Y.

ifmssns device embodying my invention.

UNITED STATES PATENT OFFICE.

OSWALD BURNETT, OF IRVINGTON, ASSIGNOR OF THREE-FOURTHS HIS RIGHT TO 0.H. ALBERTSON AND BENJAMIN HALL, OF VIENNA, N. J.

IMPROVEMENT IN ROTARY ENGINES.

Specification forming part of Letters Patent No. 163,572, dated May 25,1875 application filed May 21,1874.

To all whom it may concern:

Be it known that I, ()SWALD BURNETT, of Irvington, in the county ofEssex and the State of New Jersey, have invented a new and usefulImprovement in Rotary Engines and I do hereby declare the following tobe a clear and exact description of the nature thereof sufficient toenable others skilled in the art to which my invention appertains tofully understand, make, and use the same, reference being bad to theaccompanying drawings making part of this specification, in which Figure1 is a side view of the interior of the Fig. 2 is an inside view of thecylinder or casing. Fig. 3 is a side view of a detached portion. Fig. 4is a horizontal section in line a; 00, Fig. 1. Fig. 5 is a face view ofthe valve detached. Fig. 6 is an end view thereof.

Similar letters of reference indicate corresponding parts in the severalfigures.

My invention consists in a rotary engine wherein the valves areconstructed of two parts, so that the valves may be applied laterally inposition in depressions in the sides of the rotary head or disk, andconnected to the tongues therein.

Referring to the drawings, A represents the cylinder, and B a rotatingdisk placed therein, and having its bearing-shaft 0 pass throughopenings in the heads of the cylinder, and to which shaft may beattached a pulley or bandwheel for communicating power to the desiredspot or machinery. To the surface of the disk B, at opposite pointsthereof, there are hinged valves D, whose heads a are of circular form,and enter correspondingly-shaped openings or depressions b, being at thesides of the disk near its circumference. The heads of the valves haveformed with or secured to them toe-pieces G, which project inwardly, andoccupy positions in a groove, H, formed in one face of the disk B. Eachvalve is made in two parts, a a, of which one part, a, has a head, a,and-laterally-extendin g face I). The other part, a,lias a head, a, andthe toe-piece G. The part a is brought up against and screwed to theside face I), and this leaves a space for the reception of the tongue,0, formed by the side depressions b of the disk. The axial pin a of thevalve passes through the heads a a, and tongue 0. In order that thevalves may not project beyond the periphery of the disk, the axial pinsa are set back from the periphery of the disk, and as the spaces acrossthe outer edges of the depressions b, as ate to f, are narrower than thediameters of the heads a a, the valves are applied laterally. As thetongues of the head or disk are in the middle of each set of depressionsb, the valves are made in two parts in order to be pivoted to saidtongues, and applied from opposite sides of the head, the application ofthe same from the periphery being prevented, owing to the spaces 0 fbeing narrower than the diameter of the heads a a. By these means, also,the sides of the-valves will be flush with the sides of the head, andfit flush against the abutment K and inner face of the cylinder.

I do not claim a rotary engine consisting of a cylinder head, cam, andabutment, with valves having toe-pieces, as I am aware that they are notnew.

A cam-shaped piece, J, is secured to theinner face of one of the headsof the cylinder, and so located that when the disk B is in position thecam J is in the groove H of said disk. K represents an abutment whichprojects inwardly from the inner circumference of the cylinder A, andarranged in relation to the induction-pipe Land exhaust-pipe M. Thesides of the disk B are flattened or cut away at opposite points, inorder that when the valves are folded or closed against the disk theouter surfaces of the valves will continue the curve of the disk, thusmaintaining the cylindricalform of the disk. When the parts are inposition, Fig. 1, the steam from the pipe L presses against an openvalve and rotates the disk B, thus imparting motion to the shaft 0. Whenthe open valve uncovers or clears the pipe M, the steam exhausts. Thevalve then reaches the abutment K, and is thereby folded or closed.Meanwhile, the other valve having previously cleared, the abutment K hasits toe-piece Gr come in contact with point or beginning of the cam Jthus throwing out or opening the said valve, which then takes steam frompipe L, and con. tinucs the motion of the disk B. The first named valvenow clears the abutment K, and is opened by the action of the cam J onthe toe-piece G, these operations causing continuous rotation of theshaft 0. The cam J is of such length that it is cleared of the toepiecesof the valves before the latter reach the abutment K. When the valvesclose, the toe-pieces thereof enter cavities 0, formed in the adjacentportions of the disk B 5 but the closing of the valves throws out thetoe-pieces, and places them in position for contact with the claw J.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

OSWALD BURNETT.

Witnesses:

JOHN A. WIEDERSHEIM, A. P. GRANT.

